220440243434 has 4 divisors (see below), whose sum is σ = 330660365154. Its totient is φ = 110220121716.

The previous prime is 220440243421. The next prime is 220440243449. The reversal of 220440243434 is 434342044022.

220440243434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 204362764225 + 16077479209 = 452065^2 + 126797^2 .

It is a super-3 number, since 3×220440243434³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 220440243434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55110060857 + ... + 55110060860.

Almost surely, 2^220440243434 is an apocalyptic number.

220440243434 is a deficient number, since it is larger than the sum of its proper divisors (110220121720).

220440243434 is a wasteful number, since it uses less digits than its factorization.

220440243434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110220121719.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 220440243434 its reverse (434342044022), we get a palindrome (654782287456).

The spelling of 220440243434 in words is "two hundred twenty billion, four hundred forty million, two hundred forty-three thousand, four hundred thirty-four".